<?php
namespace ProVM\Common\Service;

use Ddeboer\Imap\MailboxInterface;
use PDOException;
use Psr\Log\LoggerInterface;
use ProVM\Common\Exception\Database\BlankResult;
use ProVM\Emails\Repository\Mailbox;
use ProVM\Common\Service\Remote;
use ProVM\Emails\Repository\State;

class Mailboxes extends Base
{
    public function __construct(Mailbox $repository, Remote\Mailboxes $remoteService, State\Mailbox $states, LoggerInterface $logger, protected int $max_update_days)
    {
        $this->setRepository($repository)
            ->setRemoteService($remoteService)
            ->setStatesRepository($states)
            ->setLogger($logger);
    }

    protected Mailbox $repository;
    protected Remote\Mailboxes $remoteService;
    protected State\Mailbox $statesRepository;

    public function getRepository(): Mailbox
    {
        return $this->repository;
    }
    public function getRemoteService(): Remote\Mailboxes
    {
        return $this->remoteService;
    }
    public function getStatesRepository(): State\Mailbox
    {
        return $this->statesRepository;
    }
    public function setRepository(Mailbox $repository): Mailboxes
    {
        $this->repository = $repository;
        return $this;
    }
    public function setRemoteService(Remote\Mailboxes $service): Mailboxes
    {
        $this->remoteService = $service;
        return $this;
    }
    public function setStatesRepository(State\Mailbox $repository): Mailboxes
    {
        $this->statesRepository = $repository;
        return $this;
    }

    public function getLocalMailbox(string $mailbox_name): \ProVM\Emails\Model\Mailbox
    {
        return $this->getRepository()->fetchByName($mailbox_name);
    }
    public function getRemoteMailbox(string $mailbox_name): MailboxInterface
    {
        return $this->getRemoteService()->get($mailbox_name);
    }

    public function getAll(): array
    {
        return $this->getRemoteService()->getAll();
    }
    public function getRegistered(): array
    {
        return $this->getRepository()->fetchAll();
    }
    public function get(int $mailbox_id): \ProVM\Emails\Model\Mailbox
    {
        return $this->getRepository()->fetchById($mailbox_id);
    }

    public function isRegistered(string $mailbox_name): bool
    {
        try {
            $mailbox = $this->getRepository()->fetchByName($mailbox_name);
            return true;
        } catch (BlankResult $e) {
            return false;
        }
    }

    public function register(string $mailbox_name): bool
    {
        $remote_mailbox = $this->getRemoteMailbox($mailbox_name);
        $name = $remote_mailbox->getName();
        $validity = $remote_mailbox->getStatus()->uidvalidity;
        try {
            $mailbox = $this->getRepository()->create(compact('name', 'validity'));
            $this->getRepository()->save($mailbox);
            return true;
        } catch (PDOException $e) {
            return false;
        }
    }
    public function updateState(\ProVM\Emails\Model\Mailbox $mailbox, array $messages, \DateTimeInterface $dateTime): bool
    {
        $data = [
            'mailbox_id' => $mailbox->getId(),
            'date_time' => $dateTime->format('Y-m-d H:i:s'),
            'count' => count($messages),
            'uids' => serialize($messages)
        ];
        try {
            $state = $this->getStatesRepository()->create($data);
            $this->getStatesRepository()->save($state);
            return true;
        } catch (PDOException $e) {
            $this->getLogger()->error($e);
            return false;
        }
    }
    public function unregister(string $mailbox_name): bool
    {
        try {
            $mailbox = $this->getRepository()->fetchByName($mailbox_name);
        } catch (BlankResult $e) {
            $this->getLogger()->error($e);
            // It's already unregistered
            return true;
        }
        try {
            $this->getRepository()->delete($mailbox);
            return true;
        } catch (PDOException $e) {
            return false;
        }
    }
    public function validate(string $mailbox_name): bool
    {
        $mailbox = $this->getLocalMailbox($mailbox_name);

        if (!$this->getRemoteService()->validate($mailbox_name, $mailbox->getValidity())) {
            $remote_mailbox = $this->getRemoteMailbox($mailbox_name);
            $mailbox->setValidity($remote_mailbox->getStatus()->uidvalidity);
            $this->getRepository()->save($mailbox);
            return false;
        }
        return true;
    }
    public function isUpdated(\ProVM\Emails\Model\Mailbox $mailbox): bool
    {
        $states = $mailbox->getStates();
        if (count($states) === 0) {
            return false;
        }
        $last = $states[count($states) - 1];
        return abs((int) $last->getDateTime()->diff(new \DateTimeImmutable())->format('%r%a')) < $this->max_update_days;
    }
}